GB2203982A - A granular filled and woven fibre or mat sheathed pultrusion - Google Patents

A granular filled and woven fibre or mat sheathed pultrusion Download PDF

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Publication number
GB2203982A
GB2203982A GB08709455A GB8709455A GB2203982A GB 2203982 A GB2203982 A GB 2203982A GB 08709455 A GB08709455 A GB 08709455A GB 8709455 A GB8709455 A GB 8709455A GB 2203982 A GB2203982 A GB 2203982A
Authority
GB
United Kingdom
Prior art keywords
filler
cloth
former
die
mat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB08709455A
Other languages
English (en)
Other versions
GB8709455D0 (en
Inventor
Robert Strachan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB08709455A priority Critical patent/GB2203982A/en
Publication of GB8709455D0 publication Critical patent/GB8709455D0/en
Priority to ZA882829A priority patent/ZA882829B/xx
Priority to EP88903318A priority patent/EP0356449B1/en
Priority to US07/424,229 priority patent/US5120380A/en
Priority to JP63503506A priority patent/JP2555437B2/ja
Priority to AU16249/88A priority patent/AU608322B2/en
Priority to KR1019880701707A priority patent/KR920009945B1/ko
Priority to DE8888903318T priority patent/DE3872390T2/de
Priority to SU4742432/26A priority patent/RU2067538C1/ru
Priority to PCT/GB1988/000305 priority patent/WO1988008367A1/en
Priority to AT88903318T priority patent/ATE77584T1/de
Priority to CA000564946A priority patent/CA1325504C/en
Priority to CN88103211A priority patent/CN1026568C/zh
Publication of GB2203982A publication Critical patent/GB2203982A/en
Priority to NO885695A priority patent/NO177130C/no
Priority to DK520789A priority patent/DK163219C/da
Priority to FI895003A priority patent/FI97870C/fi
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/02—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers, incorporated in matrix material, forming one or more layers and with or without non-reinforced or non-filled layers
    • B29C70/021—Combinations of fibrous reinforcement and non-fibrous material
    • B29C70/025—Combinations of fibrous reinforcement and non-fibrous material with particular filler
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B29C70/525—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
    • B29K2033/04—Polymers of esters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B29K2067/06—Unsaturated polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0809—Fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0854—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns in the form of a non-woven mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/001—Profiled members, e.g. beams, sections
    • B29L2031/003—Profiled members, e.g. beams, sections having a profiled transverse cross-section

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Ropes Or Cables (AREA)
  • Metal Rolling (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Revetment (AREA)
  • Metal Extraction Processes (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Casting Devices For Molds (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Laminated Bodies (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
GB08709455A 1987-04-22 1987-04-22 A granular filled and woven fibre or mat sheathed pultrusion Withdrawn GB2203982A (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
GB08709455A GB2203982A (en) 1987-04-22 1987-04-22 A granular filled and woven fibre or mat sheathed pultrusion
EP88903318A EP0356449B1 (en) 1987-04-22 1988-04-21 In-line core-filled pultruded profiles
SU4742432/26A RU2067538C1 (ru) 1987-04-22 1988-04-21 Профиль из композиционного материала с сердцевиной и устройство для его изготовления
AT88903318T ATE77584T1 (de) 1987-04-22 1988-04-21 In reihe kerngefuellte, pultrusierte profile.
US07/424,229 US5120380A (en) 1987-04-22 1988-04-21 Method and apparatus for forming in-line core-filled pultruded profiles
JP63503506A JP2555437B2 (ja) 1987-04-22 1988-04-21 インライン芯材埋込み引抜き成形装置
AU16249/88A AU608322B2 (en) 1987-04-22 1988-04-21 In-line core-filled pultruded profiles
KR1019880701707A KR920009945B1 (ko) 1987-04-22 1988-04-21 직렬의 코아가 충전된 인발성형 형재 및 그의 제조장치
DE8888903318T DE3872390T2 (de) 1987-04-22 1988-04-21 In reihe kerngefuellte, pultrusierte profile.
ZA882829A ZA882829B (en) 1987-04-22 1988-04-21 In-line core-filled pultruded profiles
PCT/GB1988/000305 WO1988008367A1 (en) 1987-04-22 1988-04-21 In-line core-filled pultruded profiles
CA000564946A CA1325504C (en) 1987-04-22 1988-04-22 In-line core filled pultruded profiles
CN88103211A CN1026568C (zh) 1987-04-22 1988-04-22 一种制造具有型芯树脂粘结剂皮层的挤拉成型材的方法和设备
NO885695A NO177130C (no) 1987-04-22 1988-12-21 Anordning for fremstilling av pultruderte profiler
DK520789A DK163219C (da) 1987-04-22 1989-10-20 Anlaeg til brug ved fremstilling af pultruderede profiler
FI895003A FI97870C (fi) 1987-04-22 1989-10-20 Ajettaessa ytimestä täytetty suulakevedetty profiili

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08709455A GB2203982A (en) 1987-04-22 1987-04-22 A granular filled and woven fibre or mat sheathed pultrusion

Publications (2)

Publication Number Publication Date
GB8709455D0 GB8709455D0 (en) 1987-05-28
GB2203982A true GB2203982A (en) 1988-11-02

Family

ID=10616123

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08709455A Withdrawn GB2203982A (en) 1987-04-22 1987-04-22 A granular filled and woven fibre or mat sheathed pultrusion

Country Status (16)

Country Link
US (1) US5120380A (da)
EP (1) EP0356449B1 (da)
JP (1) JP2555437B2 (da)
KR (1) KR920009945B1 (da)
CN (1) CN1026568C (da)
AT (1) ATE77584T1 (da)
AU (1) AU608322B2 (da)
CA (1) CA1325504C (da)
DE (1) DE3872390T2 (da)
DK (1) DK163219C (da)
FI (1) FI97870C (da)
GB (1) GB2203982A (da)
NO (1) NO177130C (da)
RU (1) RU2067538C1 (da)
WO (1) WO1988008367A1 (da)
ZA (1) ZA882829B (da)

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3929146A1 (de) * 1989-09-02 1991-03-07 Martin Rudolph Verfahren und vorrichtung zur herstellung faserverstaerkter formteile
GB9008655D0 (en) * 1990-04-18 1990-06-13 Caledonia Composites Vertical pultruder
JPH06503517A (ja) * 1990-08-16 1994-04-21 オムニグラス　リミテッド 横方向繊維を含む引き出し法
DK211090D0 (da) * 1990-09-03 1990-09-03 Oeyvind Ellegaard Fremgangsmaade og anlaeg til fremstilling af bloklegemer ud fra loest materiale, f.eks. sphagnum
GB9117964D0 (en) * 1991-08-20 1991-10-09 Caledonia Composites Pultrude profile surface finishing method
US5286320A (en) * 1991-11-18 1994-02-15 Owens-Corning Fiberglas Technology Inc. Method for making a pultruded panel
US5492583A (en) * 1992-11-16 1996-02-20 Geotek, Inc. Apparatus and method for in-line coating of pultrusion profiles
US5393536A (en) * 1993-04-05 1995-02-28 Crane Plastics Company Coextrusion apparatus
BR9508169A (pt) * 1994-06-28 1997-12-23 Marshall Ind Composites Aparelho para formar rebarra estrutural de reforço
US5763042A (en) * 1994-06-28 1998-06-09 Reichhold Chemicals, Inc. Reinforcing structural rebar and method of making the same
US5609806A (en) * 1994-06-28 1997-03-11 Reichhold Chemicals, Inc. Method of making prepreg
WO1996018494A1 (en) * 1994-12-13 1996-06-20 Dow-United Technologies Composite Products, Inc. Shaped unidirectional fiber filler
US5585155A (en) * 1995-06-07 1996-12-17 Andersen Corporation Fiber reinforced thermoplastic structural member
US5747075A (en) * 1995-06-07 1998-05-05 Owens-Corning Fiberglas Technology Inc. Apparatus for resin ipregnated pultrusion
DE19523490C2 (de) * 1995-06-28 1997-04-10 Werner & Pfleiderer Vorrichtung und Verfahren zur Imprägnierung von Fasersträngen mit Kunststoffmaterial
US5876641A (en) * 1995-07-31 1999-03-02 Andersen Corporation In-line process for injection of foam material into a composite profile
DE69710202D1 (de) 1996-10-07 2002-03-14 Marshall Ind Composites Lima Verstärkter verbundgegenstand und vorrichtung und verfahren zu seiner herstellung
US5866051A (en) * 1997-04-23 1999-02-02 Industrial Technology Research Institute Method of making continuous glass fiber-reinforced thermoplastic foam sandwich composites
DE19925918B4 (de) * 1999-02-06 2005-06-09 Fagerdala Benelux S.A. Verfahren zur Armierung von Kunststoffsträngen
US6280001B1 (en) 1999-03-05 2001-08-28 Cascade Engineering, Inc. Waste container and wheel assembly with pultruded axle
US6395210B1 (en) 1999-05-12 2002-05-28 A&P Technology, Inc. Pultrusion method and device for forming composites using pre-consolidated braids
AU2088401A (en) * 1999-12-29 2001-07-16 Owens Corning Process and apparatus for producing reinforced composite systems
WO2007009214A1 (en) * 2005-07-15 2007-01-25 Mastercore System Ltd. Multistage method and apparatus for continuously forming a composite article
US7901762B2 (en) 2005-11-23 2011-03-08 Milgard Manufacturing Incorporated Pultruded component
US7875675B2 (en) 2005-11-23 2011-01-25 Milgard Manufacturing Incorporated Resin for composite structures
US8101107B2 (en) 2005-11-23 2012-01-24 Milgard Manufacturing Incorporated Method for producing pultruded components
US8597016B2 (en) 2005-11-23 2013-12-03 Milgard Manufacturing Incorporated System for producing pultruded components
US7597771B2 (en) * 2006-02-07 2009-10-06 Comfort Line Ltd. Pultrusion method and related article
EP2096183B1 (en) * 2006-10-23 2013-06-19 Mitsubishi Materials Corporation Apparatus for producing porous body and method for producing porous body
DE102008013467A1 (de) * 2007-03-23 2008-11-13 Thomas Gmbh + Co. Technik + Innovation Kg Verfahren und Vorrichtung zur Herstellung eines Kunststoffprofils
CA2801267A1 (en) * 2010-06-11 2011-12-15 Ticona Llc Structural member formed from a solid lineal profile
RU2013102598A (ru) 2010-06-22 2014-07-27 ТИКОНА ЭлЭлСи Армированные полые профили
MX2012014179A (es) 2010-06-22 2013-02-21 Ticona Llc Material pre-impregnado temoplastico que contiene fibras continuas y largas.
CN102947078B (zh) 2010-06-22 2015-07-08 提克纳有限责任公司 用于形成增强的拉挤型材的方法
US8684075B2 (en) 2011-02-17 2014-04-01 Baker Hughes Incorporated Sand screen, expandable screen and method of making
US9017501B2 (en) 2011-02-17 2015-04-28 Baker Hughes Incorporated Polymeric component and method of making
US8664318B2 (en) 2011-02-17 2014-03-04 Baker Hughes Incorporated Conformable screen, shape memory structure and method of making the same
US9044914B2 (en) 2011-06-28 2015-06-02 Baker Hughes Incorporated Permeable material compacting method and apparatus
US8720590B2 (en) * 2011-08-05 2014-05-13 Baker Hughes Incorporated Permeable material compacting method and apparatus
US8721958B2 (en) 2011-08-05 2014-05-13 Baker Hughes Incorporated Permeable material compacting method and apparatus
CA2845680A1 (en) * 2011-08-22 2013-02-28 Relion Protection System Ag Ballistic multilayer arrangement
US10464850B2 (en) * 2013-09-19 2019-11-05 United Technologies Corporation Filament winding apparatus and method for ceramic matrix composites
US9855702B1 (en) 2013-10-03 2018-01-02 The Boeing Company Method and apparatus for making composite fillers
US9415577B1 (en) 2013-10-03 2016-08-16 The Boeing Company Automated fabrication of composite fillers
DE102015214909A1 (de) * 2015-08-05 2017-02-09 Bayerische Motoren Werke Aktiengesellschaft Flechtpultrusionsvorrichtung zur Herstellung eines faserverstärkten Kunststoffhohlprofils
US10232551B2 (en) * 2016-04-15 2019-03-19 Cc3D Llc Head and system for continuously manufacturing composite hollow structure
DE102017009839A1 (de) * 2017-07-12 2019-01-17 Oke Kunststofftechnik Gmbh & Co. Kg Verfahren zur Herstellung eines Verbundprofils und Verbundprofil
CN108058369B (zh) * 2017-12-21 2019-09-17 重庆馨康阁科技有限公司 救护车贴膜方法
CN111605230B (zh) * 2020-06-03 2022-06-28 全球能源互联网研究院有限公司 绝缘杆及其制造方法和制造装置

Citations (5)

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Publication number Priority date Publication date Assignee Title
GB1206946A (en) * 1966-10-11 1970-09-30 English Electric Co Ltd Improvements in or relating to the continuous production of a fibre-reinforced plastics material
GB1373782A (en) * 1972-10-05 1974-11-13 English Electric Co Ltd Manufacture of reinforced plastics
GB2082112A (en) * 1980-08-21 1982-03-03 Mitsubishi Petrochemical Co Pulltrusion of elongate fibre-reinforced resin articles
GB2143768A (en) * 1983-07-05 1985-02-20 Michael John Hewitt The manufacture of structural profile
GB2160143A (en) * 1984-05-09 1985-12-18 Michael John Hewitt The manufacture of lightweight extruded structural profile

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GB1338536A (en) * 1972-05-30 1973-11-28 Shell Int Research Method of producing an article of thermosetting resin
ES416007A1 (es) * 1972-08-01 1976-02-16 Siempelkamp Gmbh & Co Instalacion para la fabricacion de placas de virutas, pla- cas de fibras y productos similares.
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JPS6021853A (ja) * 1983-07-18 1985-02-04 日本特殊陶業株式会社 リン酸ジルコニウム低膨張磁器
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Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
GB1206946A (en) * 1966-10-11 1970-09-30 English Electric Co Ltd Improvements in or relating to the continuous production of a fibre-reinforced plastics material
GB1373782A (en) * 1972-10-05 1974-11-13 English Electric Co Ltd Manufacture of reinforced plastics
GB2082112A (en) * 1980-08-21 1982-03-03 Mitsubishi Petrochemical Co Pulltrusion of elongate fibre-reinforced resin articles
GB2143768A (en) * 1983-07-05 1985-02-20 Michael John Hewitt The manufacture of structural profile
GB2160143A (en) * 1984-05-09 1985-12-18 Michael John Hewitt The manufacture of lightweight extruded structural profile

Also Published As

Publication number Publication date
CA1325504C (en) 1993-12-28
JPH02503772A (ja) 1990-11-08
EP0356449B1 (en) 1992-06-24
FI97870C (fi) 1997-03-10
GB8709455D0 (en) 1987-05-28
DE3872390D1 (de) 1992-07-30
EP0356449A1 (en) 1990-03-07
WO1988008367A1 (en) 1988-11-03
RU2067538C1 (ru) 1996-10-10
DK520789D0 (da) 1989-10-20
KR890700463A (ko) 1989-04-25
NO177130C (no) 1995-08-09
FI97870B (fi) 1996-11-29
DK520789A (da) 1989-10-20
NO885695L (no) 1988-12-21
CN1030204A (zh) 1989-01-11
US5120380A (en) 1992-06-09
ATE77584T1 (de) 1992-07-15
DK163219B (da) 1992-02-10
DK163219C (da) 1992-07-06
KR920009945B1 (ko) 1992-11-06
CN1026568C (zh) 1994-11-16
JP2555437B2 (ja) 1996-11-20
AU1624988A (en) 1988-12-02
DE3872390T2 (de) 1993-04-08
NO177130B (no) 1995-04-18
FI895003A0 (fi) 1989-10-20
NO885695D0 (no) 1988-12-21
AU608322B2 (en) 1991-03-28
ZA882829B (en) 1989-01-25

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